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(No Model.) v 2 Sheefs--Sheet E. B. BBNHAM 8u H. B. RICHARDSON.

HYDRAULIC MOTOR.

No. 275,520. Patented Apr..24,18l83.

' Nv Plrs, Pnowmhemphn. washington. n.6`

(Nol Model.)

2 Sheets- Sheet 2. E. B. BENHAM $5 H. B. RICHARDSON.

HYDRAULIG MOTOR.

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UNiTED STATES PATENT OEEICE.

ELIJAH B. BENHAM, OF MYSTIC, CONNECTICUT, AND HENRY B. RICHARDSON,

OF AMHERST, MASSACHUSETTS,

ASSIGNORS TO THE AWHERST HY- DRAULIC MOTORCOMPANY, OF BOSTON, MASSACHUSETTS.

HYDRAULIC MOTOR.

SPECIFICATIN forming part of LettersIPatent No. 276,520, dated April 24, 1883.

Application led September 4, 1882.

To all whom it may concern Be it known that we, ELIJAH B. BENHAM and HENRY B. RICHARDSON, citizens of the United States, residing respectively at Mystic,`,New London county, and State of Con- A neeti'cut, and at Amherst, in the county of Hampshire and State of Massachusetts, have jointly invented new and useful Improvements in Water-Motors, of which the 'following is a ro specification.

This invention relates to water-motors, and hasreference to that class thereof denominated piston-motorsy anditconsistsinthearraugement of a series of pistons within a cylinderdisk and radiating from the center thereof, wherein, through suitable valve-connections for" admitting and discharging water, said pistons are caused to have successive reciprocating motions, which motions are so communizo` cated to a ring whichV rests upon the ends of said pistons and co-operatively acts'witli the latter as to cause the periphery of said ring to present a continuous succession of curved inclincs under a roller-arm, which is attached 2 5 to a pulley located by the side of said disk,

whereby said pulley is givena continuous rotary motion in the plane of the movement oi' said pistons. This invention further consists in the combination, with said pistons and their cylinders,

y o fffa valve adapted to' be rotated througlidevicies connecting it with said ring, whereby water is properly admitted to and discharged from said cylinders.

In the drawings forming part of this specitication, Figure I is a front elevation lot a Water-motor embodying our invention. Fig. II is a side elevation and end view of one of the pistons. Fig. III is a side elevation showing 4o the operative parts in vertical section. Fig.

IV is a side elevation of the valve-box. Fig. V is a side elevation of the valve and a portion of the valve-lever. Fig. VI is an end view of the valve and of the inner face of the valve-box, and showing a portion of the valvelever. Fig. VII is a front elevation of that portion of the cylinder-disk within the dotted line w w, Fig. I, fromwhich the valve-box is removed. Fig. VIII is perspective view of' the wheel.

lever.

(No model.)

parts shown in Fig. V. Fig. IX is a vertical.5c section of the portion of said disk shown in Fig. VII, together with a portion of its rear hub.

In the drawings, B is a standard.V A is a supply-pipe, secured in a sleeve on. said standard by a set-screw, a.. b is the cylinder-disk, having a hubfeextending rearwardly. e is a circular valve-seat. n indicates the cylinders. c are pistons. a2 are rollers in the latter. zindicatescylinder-ports. cis abalance- D is a driving-pulley. zo is a roller- 6o arm on wheel c. o is a roller on arm w. d is the valve. h is the valve-box. s is the valve- 'm indicates the hollow valve-face. H

is the lever-ring.

Like letters refer to like parts i n the several figures.

The cylinder-disk b is a circular metallic piece having a series of cylinders, n, formed therein in lines radiating from its center. The outer ends of said cylinders are provided with 7c the ordinary shitting-boxes, as shown. Said cylinder-disk is provided witha rearwardlyprojecting hub, e2, at its center, through which and said disk is made a suitable water-passage opening into a circular valve-chamber counterbored in the front face ot' said disk, and that portion ot' the surface of said valv'echamber which surrounds and stands at a right angle to-said water-passage constitutes the valve-seat e. Port-holes z are formcd,runnin g 8o from the lower ends ot' cylinders a toward the center of disk b, which terminate in' like perforations made in the face of said valve-seat and extending rearwardly, whereby a series of water-passages is provided from said valvechamber into said cylinders. A valve-box, h, having a hub provided with the ordinary stu ing-box, and a dat rim, as shown, is adapted to be secured on the front side of sai-d cylinder-disk' by screws or other suitable means, as 9o shown, over said valvechamber. A valve, d, provided with a hollow stem, and with a semi-A circular face, m, having a chamber therein, which communicates with the interior of said stem, and its interior end closed and of taper form,is adapted to be rotated within said valvechamber and valve-box. The aforesaid semicircular chambered face m ot' valve d is adapted to bear and rotate against the valve-seat e, covering a portion of the ports z, and leaving the rest of them open into said valve-chamber, the latter being in communication with said water-passage through disk b, an opening between said passage and chamber being made by the tapering form ofthe end of valve d, whereby the face' of its inclined end is sufficiently removed from the inner border of said chamber to afford a suitable water-passage into any part of the latter which happens to be opposite to that which is occupied by the hollow valve-ring m.

The pistons c are properly fitted to have a reciprocating motion in the cylinders a, and are provided with friction-rollers a2 in their outer slotted ends.

A lever-ring, H, is adapted to rest in the yslotted ends of a certain number ofsaid pisrelative to the center of disk b that the periphery of said ring is made to present a succession of curves eccentric to the center of said disk, which are sharply inclined toward the center thereof, one of which is illustrated between the points 5 5 on said ring in Fin'. I.

'llle supply-pipe A is rigidly secured in a sleeve on the stand B by the set-screw a, and, entering the hub e2 on the rear side of disk b, is firmly secured to the latter; A balancewlieel, c, having a hub of sufficient length to permit of securing thereon the driving-pulley D, is tted to rotate on said hub c2 on disk b, and said Wheel c has an arm, w, on its rim, which extends therefrom in a line parallel to the axis of said wheel and across the periphery of said ring H, and carries on it a frictionroller, Mo, which is adapted to ride on the latter.

A valve-lever, s, is secured on the aforesaid hollow stem of valve d, and its free end engages with the end of said arm w on wheel c.

The operation of the above-described improvement is as follows: Water is admitted through the pipe A, ilowingin the direction of the arrow at the right in Fig. III, and, passing through the center of disk b, moves in the direction indicated by thearrow in said figure above the end of valve d, flowing into that part of the valve-chamber not occupied by the valve-face m, and thence into the cylinders u, whose portsz are uncovered in said valvechamber: The pressure of the water now acts against sudh pistons as are exposed thereto insaid cylinders, moving them outward, as shown at the top and at the right in Fig. I, and forcing the periphery of ring H against roller o on arm w. Vhen said pistons move outward, as aforesaid, the face m of valve d covers the ports leading to the cylinders on the opposite side of disk b, preventing any water from entering them, and providing a free exit for any that may be in them by presentingits opcnchamber directly before their ports, whence it may iiow through said chamber and valve-stem and freely run off., Thus when certain of said pistons move outward, carrying ring H with them, the latter unobstructedly retires the pistons opposite the former into their cylinders. As a consequence of forcing ring H against arm w, as aforesaid, and allowing that portion of said ring beyond said arm (or below it in Fig. I) to swing toward the center of disk b, such a curved incline is formed and forced to act against said arm that wheel c is rotated, and with it valve d, through lever 8, is made to revolve, whereby the cylinder-ports z are successively closed and opened. The wheel c, it is seen, fmust revolve in the direction indicated by the arrow, Fig, I, and the action of valve d is such as to cause the pistons inthe rear of arm w to move outward in proper succession to maintain said curved incline, and the pistons which arm fw is approaching to move inward in like degree. v

If desired, the valve d may be perforated near the outer face of disk b to allow the waste water to run off,instead of discharging it from the extreme end of the valve-stem.

It is obvious that the devices herein described and shown may, in a construction adapted thereto, be advantageously employed with steam or compressed air instead of water.

In fitting the valved toa proper bea-ring against the valve-box h, water may be allowed to flow back of the valve-ring m and into said box suftieiently to partially balance said valve and decrease its frictionagainst the latter.

What we claim as our invention isl. In a piston-motor, a series of cylinders IOO , IIO

provided with pistons adapted to have reeiprocating motions therein in lines radiating from a common center and in the same plane, ports and valve devices, and operating mechanism, substantially as described, for permitting water to enter and leave said cylinders, a ring surrounding and engaging with the ends of said pistons, a driving-wheel adapted to be rotated in the planeof thereciproeatingmove- IIS ment of the latter, and n1eans,substantially as l pistons and said wheel, whereby the reciprocating movements of the former are converted into a rotarymovement of the latter, coml bined and operating substantially as set forth.

3. In combination, the wheel c, provided with the arm w, the ring H, the cylinder-disk b, provided with a seriesof cylinders, u, and pistons v, the valved, and lever s, substantially as set forth. s

4. The combination, with the cylinderdisk b, provided with the valve-seat e, and ports z, of the valve d, having the chambered semicircular valve-face m, and an educton-opening leading` from the rear side of the latter, substantially as set forth.

5. The combination, with a series of pistons, n, ofthe ring H, adapted to b e oscillated by said pistons to cause its periphery to describe in succession curved inclines eccentric to the center of motion of said pistons, substantially as and for the purpose described.

ELIJAH B. BENHAM.

VHENRY B. RICHARDSON.

Witnesses:

H. A. CHAPIN, R. F. HYDE. 

